Headphone



FIG. 1 is a perspective view of a headphone showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a perspective view of a second embodiment of a headphone showing our new design;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a rear elevational view thereof;

FIG. 10 is a right side elevational view thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a bottom plan view thereof.

Portions in broken lines are for illustrative purposes only and form no part of claimed design. Dot-dash broken lines define the boundaries of, but not included in, the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 